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- Vacuum vessel seal structure used in the leak test of a liquid rocket engine turbopump is discussed. 論述了某型號液體火箭發(fā)動(dòng)機渦輪泵高壓低溫靜密封檢漏試驗用真空室密封結構的設計問(wèn)題。
- To deal with the lack of fault samples in the fault detection of a Liquid Rocket Engine (LRE) turbopump, a detection model based on one-class support vector machines (OC-SVMs) was founded. 摘要針對在火箭發(fā)動(dòng)機渦輪泵的故障檢測過(guò)程中缺乏故障樣本的問(wèn)題，應用單類(lèi)支持向量機，為高速渦輪泵試車(chē)數據分析建立了一種新異類(lèi)檢測超球模型。
- FAILURE SIMULATION AND DETECTION OF A LIQUID ROCKET ENGINE BASED ON ARTIFICIAL NOISE BP NEURAL NETWORK 基于人工噪聲神經(jīng)網(wǎng)絡(luò )BP算法的火箭發(fā)動(dòng)機故障仿真與檢測
- The leak of Liquid Rocket Engine (LRE) is very common and dangerous. 液體火箭發(fā)動(dòng)機的泄漏是常見(jiàn)和極其危險的故障。
- The integrity test of Liquid Rocket Engine (LRE) must be carried out before its launch. 在液體火箭發(fā)動(dòng)機發(fā)射前，必須進(jìn)行完整性試驗。
- The study may be helpful for fault diagnostics of the start up of liquid rocket engine (LRE). 為液體火箭發(fā)動(dòng)機啟動(dòng)過(guò)程的故障診斷提供參考依據。
- Rotor dynamic is one of the most complicated problems in development of LOX turbopump of liquid rocket engine. 轉子動(dòng)力學(xué)問(wèn)題是液體火箭發(fā)動(dòng)機研制中最復雜的問(wèn)題之一。
- This paper mainly discusses available structures of the liquid hybrid bearings and the key technologies that need to be solved for the liquid rocket engine turbopump. 針對液體火箭發(fā)動(dòng)機渦輪泵特殊工作環(huán)境,討論了流體動(dòng)靜壓軸承可采用的結構形式和需要解決的關(guān)鍵技術(shù)。
- By analyzing the working characteristics of the liquid rocket engine, strategies of applying data mining from the point of view of the data warehouse for FDD of LRE are proposed. 分析表明,聚類(lèi)、類(lèi)、聯(lián)、間序列分析和孤立點(diǎn)檢測等數據挖掘方法適用于液體火箭發(fā)動(dòng)機的故障檢測和診斷。
- Coaxial hydrogen/oxygen resonance ignitor is non-electric and bluntly sensible, which is good ignition scheme for the developing reusable liquid rocket engine. 非電鈍感的同軸氫氧諧振點(diǎn)火器可作為正在研究發(fā)展中的可重復使用液體火箭發(fā)動(dòng)機多次點(diǎn)火的優(yōu)選方案之一。
- A physical model of the automatic control system of a pump-fed Liquid Rocket Engine (LRE) is constructed, for which a nonlinear mathematical model is built. 摘要以能多次啟動(dòng)的某泵壓式液體火箭發(fā)動(dòng)機的自動(dòng)控制系統為研究對象，構造了液體火箭發(fā)動(dòng)機自動(dòng)控制系統的物理模型，并對其建立了非線(xiàn)性的數學(xué)模型。
- Through dynamic time warping analysis to the hot-fire test data and simulated fault data of a certain liquid rocket engine,the warped path sets were obtained. 對某大型液體火箭發(fā)動(dòng)機的熱試車(chē)數據及通過(guò)發(fā)動(dòng)機模型仿真得到的故障數據進(jìn)行動(dòng)態(tài)時(shí)間彎曲分析,得到彎曲路徑集,然后結合決策樹(shù)方法進(jìn)行了故障檢測和診斷。
- The manifestations of parameters are extracted from the simulated fault data for 16 common fault modes,these manifestations are used to establish the set cover model of multi faults diagnosis for liquid rocket engine(LRE) system. 通過(guò)從故障仿真數據中提取常見(jiàn)故障的效應參數癥狀 ,建立發(fā)動(dòng)機的集合覆蓋多故障診斷模型。
- The theory of S1 and S2 stream surface was applied to calculate and analyze the internal transonic flow field for a two-stage axial turbine used in turbopump for liquid rocket engine. 摘要應用S1,S2流面理論對某大型液氫／液氧火箭發(fā)動(dòng)機渦輪泵的兩級軸流式渦輪內部跨聲速流場(chǎng)進(jìn)行計算和分析。
- Cheese is a solid; milk is a liquid. 乾酪是固體，奶是液體。
- A mass of bubbles in or on a liquid; foam. 泡沫液體中的大量氣泡; 泡沫
- A liquid condensed from vapor in distillation. 蒸餾液; 餾出物在蒸餾中，從蒸汽濃縮的液體
- Tripropellant liquid rocket engine 三組元液體火箭發(fā)動(dòng)機
- Water passes from a liquid to a solid state when it freezes. 水結冰是由液態(tài)變?yōu)楣虘B(tài)。
- A liquid is made to flow through a siphon. 使液體通過(guò)虹吸管。
